Add booleans for parameters turning functionality off and on

[ssm]

The following parameters should be booleans, with the current values deprecated (but still working)

• munin::master::tls Enum['enabled','disabled']
• munin::master::tls_verify_certificate Enum['yes','no']
• munin::node::export_node: Enum['enabled','disabled']

The current release is 0.2.0. With semantic versioning, 0.x means "no promises", but the module has a lot of users, and I value API stability.

Should these be deprecated in a "0.3.0" release and removed in 1.0.0, or deprecated in 1.0.0 and removed in 2.0.0?

Comments welcome...

[mhjacks]

I would vote for deprecation in 0.3.0 and removal in 1.0.0. Major versions are "permission" in semver to do breaking changes. I completely understand your reluctance to break API, but the underlying language has changed a lot since you released 0.1.0, too. :)